<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!-- 块级元素独占一行 -->
<div>块级分区标签1</div><div>块级分区标签2</div><div>块级分区标签3</div>
<!-- 行内元素共占一行 -->
<span>行内分区标签1</span>
<span>行内分区标签2</span>
<span>行内分区标签3</span>
</body>
</html>